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r600g: pad the DMA CS to a multiple of 8 dwords

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Tested-by: Andreas Boll <andreas.boll.dev@gmail.com>

NOTE: This is a candidate for the 9.1 branch.
(cherry picked from commit c77917d35f)
This commit is contained in:
Marek Olšák 2013-02-27 21:24:02 +01:00 • committed by Alex Deucher
parent 1dc162d52f
commit 09199c6862
1 changed files with 14 additions and 2 deletions
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16
src/gallium/drivers/r600/r600_pipe.c
View file

@ -22,6 +22,7 @@
*/
#include "r600_pipe.h"
#include "r600_public.h"
#include "r600d.h"
#include <errno.h>
#include "pipe/p_shader_tokens.h"
@ -165,12 +166,23 @@ static void r600_flush_gfx_ring(void *ctx, unsigned flags)
static void r600_flush_dma_ring(void *ctx, unsigned flags)
{
struct r600_context *rctx = (struct r600_context *)ctx;
struct radeon_winsys_cs *cs = rctx->rings.dma.cs;
unsigned padding_dw, i;
if (!rctx->rings.dma.cs->cdw) {
if (!cs->cdw) {
return;
}
/* Pad the DMA CS to a multiple of 8 dwords. */
padding_dw = 8 - cs->cdw % 8;
if (padding_dw < 8) {
for (i = 0; i < padding_dw; i++) {
cs->buf[cs->cdw++] = DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0);
}
}
rctx->rings.dma.flushing = true;
rctx->ws->cs_flush(rctx->rings.dma.cs, flags);
rctx->ws->cs_flush(cs, flags);
rctx->rings.dma.flushing = false;
}